I would like to share with you all a float switch bracket that I made to use with RA. The idea was to build something usefull, flexible and reliable, something that would not fall into water easily.

I made this 3D project using TinkerCad (https://tinkercad.com/) and printed it using a local printer that I found using 3dHub service (http://www.3dhubs.com). It costed 10 bucks, and we can use other online services like shapeways, sculpteo, etc

It was designed for the two pieces to be fixed in each other and in the aquarium glass using plastic screws.

Of course there are alternatives (ReefKeeper Float Switch, for instance).. but it was expensive to me (cost + shipment) and it not fit my display properly.

What I did for my ATO float valves and Water Level Senor Pipes is the following.

The WaterLevel Pipe does not move. I have it pretty secure.

I drilled out the stop on a 1/2" PVC T and then cut a slit in it the width of my sump acrylic.Slipped the 1/2" tube thru there and have it resting against the bottom.

For the ATO switches.

Slot an Elbow.Put in a length of pipe including an end cap or plug (I haven't tried a plug yet) to get you close to the water level you want the float switch at.Drill a hole in the end cap big enough for the stem of the float switch.Feed the wire and stem of the float switch through the hole, pipe and out the end cap.Don't forget to put the nut on the stem of the float switch.

What I actually did was drill the hole for the float switch stem a bit smaller then the stem and then found a screw or bolt with the same thread pattern as the float switch steam and us it to tap out the hole. then you can screw the float switch directly into the end cap. You also have the ability to fine tune the level of the switch because you can screw it in further or not as much in the end cap.Also you can run the up the pipe and out the elbow and that will protect the wires from damage.